Word Study
Cowpox
CIDE DICTIONARY
Cowpox, n.
A pustular eruptive disease of the cow, which, when communicated to the human system, as by vaccination, protects from the smallpox; vaccinia; -- called also kinepox , cowpock , and kinepock . Dunglison. [1913 Webster]
OXFORD DICTIONARY
Cowpox, n. a disease of cows, of which the virus was formerly used in vaccination against smallpox.
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